| Term | Definition / Meaning / Stand for |
| MGM |
Hollywood Studios (formerly MGM Studios) |
| MGM |
Hollywood Studios |
| MTP |
Mad Tea Party (attraction at Disneyland) |
| MTP |
Mad Tea Party |
| MB2 |
Magic Bands version 2.0 |
| MB |
Magic Bands |
| MCA |
Magic Carpets of Aladdin (attraction at Magic Kingdom) |
| MCA |
Magic Carpets of Aladdin |
| MK |
Magic Kingdom |
| MYW |
Magic Your Way |
| ME |
Magical Express |
| MJT |
Maharajah Jungle Trek (attraction at Animal Kingdom) |
| MJT |
Maharajah Jungle Trek |
| MS |
Main Street USA |
| MAWP |
Many Adventures of Winnie the Pooh (attraction at Magic Kingdom and Disneyland) |
| MPU |
Marvel Park Universe |
| MSHL |
Marvel Super Hero Land (Universal Florida) |
| MPR |
Mary Poppins Returns |
| MP |
MaxPass |
| M&G |
Meet and Greet |
| MM |
Memory Maker |
| MMRR |
Mickey & Minnie's Runaway Railway |
| MMR |
Mickey Mouse Revue (defunct attraction) |
| M&F |
Mickey and Friends (parking garage) |
| MSNSSHP |
Mickey's Not So Scary Halloween Party |
| MNSSHP |
Mickey's Not-So-Scary Halloween Party |
| MOUAC(T)P |
Mickey's Once Upon A Christmastime Parade |
| MOUACTP |
Mickey's Once Upon a Christmastime Parade |
| MPM |
Mickey's PhilharMagic |
| MRFF |
Mickey's Royal Friendship Faire |
| MVMCP |
Mickey's Very Merry Christmas Party (seasonal event at Disneyland) |
| MVMCP |
Mickey's Very Merry Christmas Party |
| MDA |
Mighty Ducks of Anaheim |
| MD |
Mighty Ducks |
| M:B |
Mission: Breakout (Guardians of the Galaxy overlay at DCA) |
| M:B |
Mission: Breakout (Guardians of the Galaxy overlay at Disney California Adventure) |
| M:B |
Mission: Breakout |
| M:S |
Mission: SPACE (attraction at Epcot) |
| M:S |
Mission: SPACE |
| MI |
Monsters, Inc. Laugh Floor (attraction at Magic Kingdom) |
| MI |
Monsters, Inc. Laugh Floor |
| MLF |
Monsters, Inc. Laugh Floor |
| MiSi |
Move It! Shake It! Dance Party |
| MiSiMDi |
Move It! Shake It! MousekaDance It! |
| MiSiDiPi |
Move it! Shake it! Dance & Play it! Street Party |
| MDX |
My Disney Experience |
| MM+ |
My Magic Plus |
| MSEP |
Main Street Electrical Parade (a nighttime parade at Disneyland) |
| MSEP |
Main Street Electrical Parade (nighttime parade at Disneyland) |
| MSEP |
Main Street Electrical Parade |
| MCU |
Marvel Cinematic Universe |
| MFSR |
Millennium Falcon: Smugglers Run (attraction at Disneyland and Hollywood Studios) |
| MFSR |
Millennium Falcon: Smugglers Run (attraction at Disneyland's Star Wars: Galaxy's Edge) |
| MILF |
Monsters, Inc. Laugh Floor |
| MV3D |
Muppet Vision 3D |
| MDE |
My Disney Experience (Disney's online planning tool) |
| MDE |
My Disney Experience |
| MCO |
Orlando International Airport (IATA code, often referenced by travelers from Anaheim to Orlando) |
| MCO |
Orlando International Airport |